Products >> Lithium Ion Battery Charger >> 8.4V Lithium Ion Battery Charger
8.4V 1.2A Li-Ion Charger for 2S 7.4V Lithium Battery Packs | Interchangeable Plugs, UL, cUL, CE, FCC, PSE, SAA Certified
Henryuan universal 8.4V 1.2A li-ion charger is specifically designed for safe, fast, and efficient charging of 2S 7.4V lithium battery packs. With its interchangeable plug system (US, EU, UK, AU, JP, CN, KR), it is ideal for global use, offering versatility and convenience. This charger is fully certified, ensuring compliance with international safety standards such as UL, cUL, FCC, PSE, CE, SAA, and UKCA, providing you with peace of mind regarding product quality and safety.
Key Features:
Global Safety Certifications:
This universal 8.4V 1A li-ion charger is certified to meet international standards, including:
- UL, ETL, cUL, FCC, PSE, CE EMC, LVD, UKCA, SAA, KC, CCC, ensuring reliability and safety across global markets.
Wide Input Voltage Range:
- Input AC Voltage: 100V - 240V
- Frequency: 50Hz/60Hz
- Input Current: 0.6A
- Inrush Current: 35A
Efficient Charging with Dual-Color LED Indicators:
Dual-Color LED Indicator clearly indicate the charging status:
- Model: HRY0841200, 8.4V 1.2A li-ion charger.
- Constant Current Mode: Current 1.2A, red LED, charging in process.
- Constant Voltage Mode: Voltage 8.4V, current decreases to 0.2A , red LED, charging in process.
- Trickle Charging Mode: 0.2A decreases to 0, 8.4V max, green LED, complete charging.
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Output |
Charging Stage |
LED Indicator |
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Current |
Voltage |
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1.2A |
5V-8.4V |
Constant Current |
Red(Charging) |
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1.2A->0.2A |
8.4V |
Constant Voltage |
Red(Charging) |
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0.2A->0 |
8.4V |
Trickle Current |
Green(Fully charged) |
Performance and Efficiency:
This universal 8.4V 1.2A charger uses an intelligent charging curve to optimize performance and extend battery lifespan. Specifically engineered for 2S 7.4V Li-Ion battery packs, it delivers consistent charging, ensuring that batteries reach their full potential safely
Advanced Protection Features:
- Overcurrent Protection: Prevents excessive current to safeguard battery life.
- Overvoltage Protection: Ensures the charger maintains a safe voltage to protect the battery.
- Short Circuit Protection: Ensures the charger maintains a safe voltage to protect both the charger and battery.
- Reverse Polarity Protection: Avoids damage from incorrect battery connections.
Quality Assurance & Customer Support:
- Rigorous Manufacturing Standards: We adhere to strict quality control processes to ensure that every charger performs reliably under all conditions.
- Experienced Engineering Team: With over 20 years of experience in charger development, our engineers design products that meet the highest standards of safety and performance.
- Comprehensive Testing: 100% of our chargers undergo rigorous aging tests, including 4 hours of full-load testing, to guarantee long-term reliability.
- Responsive After-Sales Support: Our dedicated customer support team resolves any issues within 48 hours, ensuring complete customer satisfaction.
Professional Production Equipments:
Why Choose Henryuan?
With over 13 years of expertise in the lithium-ion battery charger industry, Henryuan is a China recognized leader in charger manufacturing. Our 8.4V chargers are trusted by industries such as robotics, medical devices, portable power banks, LED lighting, and more. With a strong global presence, including markets in the Americas, Europe, Australia, and Asia, we are committed to delivering premium products and excellent customer service.
Available Models:
We offer a range of 8.4V chargers for 2S 7.4V lithium battery packs, from 0.5A to 25A, catering to various needs in industries like lights, massagers, heated clothing, GPS, medical products.etc.
More 8.4V Lithium Battery Chargers Links:
Q&A
Q: Why does my 2S Lithium-Ion pack require an explicit 8.4V charger instead of a standard 9V or 5V power adapter?
A: A standard 2S Lithium-Ion pack consists of two 3.7V cells wired in series. While their nominal voltage is 7.4V, their maximum fully charged threshold is exactly 8.4V (4.2V*2).
If you use a generic 9V power supply, it lacks the specialized battery-charging brain. It will pump excessive voltage into the cells, permanently destroying the chemical substrate, triggering the BMS over-voltage protection, or worse—causing thermal runaway (cell swelling/fire). Conversely, a 5V adapter won't have enough voltage headroom to push any current into the cells at all. Our 8.4V platform is precisely calibrated to stop exactly at the maximum safe charging ceiling of a 2S pack.
Q: My application uses high-accuracy telemetry and sensors. Will this charger interfere with system readings while plugged in?
A: Generic, cheap chargers leak massive high-frequency electromagnetic interference (EMI) and voltage ripple back into the device, distorting sensor data and causing display jitter.
Our 8.4V 1.2A charger features an advanced closed-loop analog filtering system that restricts total voltage ripple to 50mV. By delivering incredibly clean, stabilized DC power, it ensures that your internal fuel gauges, Bluetooth/Wi-Fi modules, and microcontrollers can sample data with absolute precision, even while the device is fast-charging under high loads.
Q: We ship our products globally. How does this charger handle different international power grids and wall outlets?
A: Our 8.4V chargers are built with a universal wide-voltage input interface (90V to 264V AC, 50/60Hz).
Whether your end-user plugs it into a 110V grid or a 230V grid, the internal power stage handles the conversion flawlessly. Furthermore, we provide a complete suite of interchangeable or region-specific AC sockets, including US (Type A/B), EU (Type C/E/F), UK (Type G), and AU (Type I) formats. Every regional configuration carries traceable, active safety certifications, allowing you to ship one standardized device bundle globally.
Q: What safety fail-safes are integrated to prevent battery over-heating or infield fires?
A: Our 8.4V li-ion chargers feature a 4-tier hardware safety matrix:- Over-Voltage Protection (OVP): Clamps output instantly if a component drifts, ensuring the cells never see a fraction over 8.4V.
- Intelligent Over-Current Protection (OCP): 1.2A precise charging current.
- Short-Circuit Protection (SCP): If the DC cable is severed or the terminal pins short out, the charger cuts power in milliseconds, recovering automatically once the fault is removed.
- Reverse Polarity Protection: Prevents catastrophic terminal shorting if a user accidentally forces the battery connectors backward.
Q: Can we customize the DC output connector and cable specifications for our specific enclosure?
A: Absolutely. We know that industrial scanners, portable medical tools, and consumer electronics all use wildly different industrial designs. Our support full customization. We can supply standard 5.5x2.1mm DC barrels, USB-C terminations, waterproof circular aviation plugs, JST sliders, or customized connectors to your charging port.
Contact Us:
For inquiries or to purchase the 8.4V 1.2A Li-Ion Charger, please reach out to Henryuan's expert teams today, The China leading manufacturer of li-ion battery chargers.
Common Li-ion 8.4V AC Charger Models for Projects
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Henryuan 8.4V Li-ion Charging Solutions(CB, UL, cUL, FCC, ETL, CE, EMC, UKCA, SAA, PSE, KC, CCC, RoHS) |
Model |
Input |
Output(Voltage/Current) |
Output(Power) |
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HRY0840300 |
100-240V ac, 50/60Hz |
8.4V 0.3A |
2.52W |
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HRY0840400 |
8.4V 0.4A |
3.36W |
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HRY0840500 |
8.4V 0.5A |
4.2W |
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HRY0840600 |
8.4V 0.6A |
5.04W |
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HRY0840700 |
8.4V 0.7A |
5.88W |
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HRY0840800 |
8.4V 0.8A |
6.72W |
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HRY0840900 |
8.4V 0.9A |
7.56W |
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HRY0841000 |
8.4V 1.0A |
8.4W |
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HRY0841200 |
8.4V 1.2A |
10.08W |
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HRY0841500 |
8.4V 1.5A |
12.6W |
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HRY0841800 |
8.4V 1.8A |
15.12W |
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HRY0842000 |
8.4V 2.0A |
16.8W |
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HRY0842500 |
8.4V 2.5A |
21W |
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HRY0843000 |
8.4V 3.0A |
25.2W |
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HRY0844000 |
8.4V 4.0A |
33.6W |
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HRY0845000 |
8.4V 5.0A |
42W |
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HRY0846000 |
8.4V 6.0A |
50.4W |
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HRY0846500 |
8.4V 6.5A |
54.6W |
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HRY0847000 |
8.4V 7.0A |
58.8W |
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HRY0848000 |
8.4V 8.0A |
67.2W |
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HRY08410000 |
8.4V 10.0A |
84.0W |
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